JavaScript-Developer-I Valid Test Preparation, Dumps JavaScript-Developer-I Free Download

P.S. Free 2026 Salesforce JavaScript-Developer-I dumps are available on Google Drive shared by VCE4Dumps: https://drive.google.com/open?id=1liNLjWvvfFf751yeVkXeXLMgfcBczRsl

Candidates for the JavaScript-Developer-I exam can rely on our practice material because it is of the greatest quality and will assist them in preparing for the Salesforce certification test successfully on the first try. VCE4Dumps's main goal is to offer 100% actual JavaScript-Developer-I Exam Questions in order to help applicants clear the JavaScript-Developer-I test in a short time. We are confident that our updated JavaScript-Developer-I practice questions will help you pass the Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) certification exam on the first attempt.

What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam

This exam is offered in only English.
There is a time limit of 105 minutes for the exam.
Passing score 65%
This exam consists of 60 questions
The type of questions is Multiple Choice and situation-based questions.

>> JavaScript-Developer-I Valid Test Preparation <<

Pass Guaranteed Quiz 2026 Salesforce JavaScript-Developer-I: Authoritative Salesforce Certified JavaScript Developer (JS-Dev-101) Valid Test Preparation

We provide you with the latest prep material which is according to the content of Salesforce JavaScript-Developer-I certification exam and enhances your knowledge to crack the test. VCE4Dumps practice material is made by keeping in focus all the sections of the current syllabus. Our primary objective is to provide you with Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) actual questions to complete preparation for the test in few days. Our product includes Salesforce Certified JavaScript Developer (JS-Dev-101) real questions, desktop practice test software, and web-based practice exam. Keep reading to find out what are the specifications of these formats.

Salesforce JavaScript-Developer-I Certification Exam is an important milestone for professionals who want to validate their technical skills in JavaScript development within the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is designed for developers who use JavaScript to build custom applications, automate business processes, and integrate Salesforce with other applications. The Salesforce Certified JavaScript Developer I credential is recognized globally and demonstrates that the holder has the knowledge and expertise to develop and deploy custom solutions on Salesforce.

Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q97-Q102):

NEW QUESTION # 97
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?

A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 }
B. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue();
C. 03 try {
04 handleObjectValue(x)
05 ........................
D. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 }

Answer: C

NEW QUESTION # 98
A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
* Will establish a web socket connection and handle receipt of messages to the server.
* Will be imported with require, and made available with a variable called ws.
* The developer also wants to add error logging if a connection fails.
Given this information, which code segment shows the correct way to set up a client with two events that listen at execution time?

A. ws.on( ' connect ' , () = > {
console.log( ' Connected to client ' );
});
ws.on( ' error ' , (error) = > {
console.log( ' ERROR ' , error);
});
B. ws.connect(() = > {
console.log( ' Connected to client ' );
}).catch((error) = > {
console.log( ' ERROR ' , error);
});
C. try {
ws.connect(() = > {
console.log( ' Connected to client ' );
});
} catch(error) {
console.log( ' ERROR ' , error);
}
D. ws.on( ' connect ' , () = > {
console.log( ' Connected to client ' );
});
ws.on( ' error ' , (error) = > {
console.log( ' ERROR ' , error);
});

Answer: A

Explanation:
The correct answer is B .
This question is about the event-driven programming model commonly used in Node.js. Many Node.js libraries expose an .on() method to register callback functions for specific events.
The correct pattern is:
ws.on( ' eventName ' , callbackFunction);
In this case, the developer needs to listen for two events:
' connect '
and:
' error '
The correct implementation is:
ws.on( ' connect ' , () = > {
console.log( ' Connected to client ' );
});
ws.on( ' error ' , (error) = > {
console.log( ' ERROR ' , error);
});
This registers one listener for successful connection and another listener for connection errors.
Why this works professionally:
ws.on( ' connect ' , callback) tells the library:
"When the connection event happens, execute this callback."
ws.on( ' error ' , callback) tells the library:
"When an error event happens, execute this callback and pass the error object into it." Option A is incorrect because .catch() is used with Promises. The question specifically says the client library is built using events and callbacks , not Promise chaining.
Option D is incorrect because try...catch only catches synchronous errors during the immediate execution of ws.connect(). It will not reliably catch asynchronous connection errors emitted later by the web socket client.
Option C is identical to option B in the provided question. Since the expected answer normally requires selecting one option, B is selected as the verified answer.
Therefore, the verified answer is B .

NEW QUESTION # 99
The developer wants to test the array shown:
Const arr = Array (5) . fill (0);
Which two test are the most accurate for this array? Choose 2 answers

A. Console,assert(arr(0) === 0 $$ arr (arr .longth ) === 0) ;
B. Arr. forEach (elem => console .assert (elem === 0) );
C. Console,assert(arr.length === 5) ;
D. Console. Assert (arr. Length > 0) ;

Answer: B

NEW QUESTION # 100
Corrected code:
function Person() {
this.firstName = " John " ;
}
Person.prototype = {
job: x = > " Developer "
};
const myFather = new Person();
const result = myFather.firstName + " " + myFather.job();
What is the value of result after line 10 executes?

A. " undefined Developer "
B. Error: myFather.job is not a function
C. " John Developer "
D. " John undefined "

Answer: C

Explanation:
The verified answer is A .
This constructor function runs when new Person() is called:
function Person() {
this.firstName = " John " ;
}
So this line:
const myFather = new Person();
creates an object like this:
{
firstName: " John "
}
Then the prototype is assigned a method named job:
Person.prototype = {
job: x = > " Developer "
};
Because myFather is created from Person, it can access properties and methods from Person.prototype.
So:
myFather.firstName
returns:
" John "
And:
myFather.job()
returns:
" Developer "
Therefore:
const result = myFather.firstName + " " + myFather.job();
becomes:
const result = " John " + " " + " Developer " ;
Final value:
" John Developer "
Option B is incorrect because job() returns " Developer " , not undefined.
Option C is incorrect because job exists on Person.prototype, so it is callable.
Option D is incorrect because firstName is assigned inside the constructor.
Therefore, the verified answer is A .

NEW QUESTION # 101
Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

A. Use the DOM inspector to prevent the load event to be fired.
B. Use the browser console to execute a script that prevents the load event to be fired.
C. Use the browser to execute a script that removes all the element containing the class ad-library-item.
D. Use the DOM inspector to remove all the elements containing the class ad-library-item.

Answer: C

NEW QUESTION # 102
......

Dumps JavaScript-Developer-I Free Download: https://www.vce4dumps.com/JavaScript-Developer-I-valid-torrent.html

P.S. Free & New JavaScript-Developer-I dumps are available on Google Drive shared by VCE4Dumps: https://drive.google.com/open?id=1liNLjWvvfFf751yeVkXeXLMgfcBczRsl